DiagrammeR (version 1.0.9)

get_constraint: Get constraint scores for one or more graph nodes

Description

Get the constraint scores (based on Burt's Constraint Index) for one or more nodes in a graph.

Usage

get_constraint(graph, nodes = NULL)

Value

A data frame with constraint scores for one or more graph nodes.

Arguments

graph

A graph object of class dgr_graph.

nodes

an optional vector of node IDs to consider for constraint scores. If not supplied, then constraint scores for all nodes in the graph will be calculated.

Examples

# Create a random graph using the
# `add_gnm_graph()` function
graph <-
  create_graph(
    directed = FALSE) %>%
  add_gnm_graph(
    n = 10,
    m = 15,
    set_seed = 23)

# Get the constaint scores for all
# nodes in the graph
graph %>% get_constraint()

# Get the constaint scores
# for nodes `5` and `7`
graph %>%
  get_constraint(
    nodes = c(5, 7))

# Add the constraint scores
# to the graph as a node
# attribute
graph <-
  graph %>%
  join_node_attrs(
    df = get_constraint(.))

# Display the graph's node data frame
graph %>% get_node_df()